en_tn/act/09/28.md

He met with them

"Saul met with the apostles"

in the name of the Lord Jesus

This is metonymy for the Gospel message of Jesus Christ. (See: rc://en/ta/man/translate/figs-metonymy)

debated with the Grecian Jews

Saul sought to reason with the Grecian Jews.

down to Caeserea

there was an elevation change from Jerusalem to Caeserea. However, it is normal to state that one is going up to Jerusalem and up to the Temple, and down when going away from Jerusalem.